Biology test 26.5.22

Question 1

Photosynthesis

Answer 1

Carbon Dioxide is converted to glucose during photosynthesis. Glucose contains carbon

Question 2

Respiration

Answer 2

CO2 is released from organic matter

Question 3

Combustion

Answer 3

fossil fuels are burned and release CO2 into the atmosphere

Question 4

Fossilisation

Answer 4

Living things don’t fully decay when they die and they fossilised. Over time they turn into fossil fuels

Question 5

Feeding and Assimilation

Answer 5

Carbon is passed from one stage of a food chain to another.

Question 6

Photosynthesis equation

Answer 6

Water + Carbon Dioxide —– Glucose + oxygen

Question 7

Aerobic respiration equation

Answer 7

Oxygen + glucose —– Water + carbon Dioxide

Question 8

Anaerobic respiration equation (in animals)

Answer 8

Glucose —– lactic acid + (some energy)

Question 9

Anaerobic respiration equation (in plants and yeast)

Answer 9

Glucose —– ethanol + carbon dioxide + water

Question 10

Combustion equation

Answer 10

Fuel + oxygen —- Carbon Dioxide + water

Question 11

How can the population of animals or plants be estimated?

Answer 11

The size of a population of animals or plants in a habitat can be estimated by taking samples of the organism from the habitat

Question 12

Quantitative sampling

Answer 12

Taking several readings and then finding the number of organisms per metres squared

Question 13

Range

Answer 13

The range of the data between the minimum and maximum values

Question 14

Mean

Answer 14

Add all the readings together and divide by 10

Question 15

Median

Answer 15

The middle values when the numbers are put in order

Question 16

Mode

Answer 16

The most frequently occurring value

Question 17

Biotic factors that affect the survival of organisms

Answer 17

Availability of food
New predators arriving
New pathogens
One species outcompeting another so the numbers are no longer sufficient to breed.

Question 18

Abiotic factors

Answer 18

Non-living factors that affect living things
Light intensity
Temperature
Moisture levels
Soil PH and mineral content
wind intensity and direction 
Availability of oxygen

Question 19

Predator

Answer 19

Consumers that kill and eat other animals

Question 20

Prey

Answer 20

Animals that are eaten